Bureau County, IL radon potential

EPA's own radon map rates Bureau County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Bureau County sits at the 86th percentile nationally for radon potential — above 86 of every 100 rated counties.

How Bureau County compares

Bureau County, Illinois is home to about 32,486 people across 869.071 square miles. Population density there runs about 37 people per square mile. Within its own EPA zone, Bureau County is bigger by population than 58% of the counties that share it. EPA's geology-based Region 5 groups Bureau County with 523 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Bureau County

Fixing a home becomes an EPA recommendation past 4 pCi/L, and that is precisely the side of the line Bureau County's Zone 1 prediction lands on, well above the roughly 1.3 pCi/L most US homes average. A Zone 1 rating means testing is worth doing sooner rather than later, but it is still county-wide average, not a reading for any single house — some homes in Bureau County will test well under the action level, and EPA's guidance is to test regardless of zone.

Next steps for a home in Bureau County

A short-term test kit is the standard first step and typically costs far less than mitigation itself. If a test comes back at or above 4 pCi/L, a radon mitigation system for a typical home runs roughly $800–$2,500 (around $1,200 for a common single-family install), driven mainly by foundation type, not by county.

Find Illinois's state radon program

For Bureau County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Bureau County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 10% off.

Where Bureau County's figures come from

Bureau County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Bureau County carries, the zone explainer covers what it does and doesn't tell you about any one house.